Table P-X
External Similitude Centers.
Points available at the Kimberling's Encyclopedia ETC.
The ETC version: The 8998 points version of 2015.
The "Discoverer" database version: October 2013.
Last update: 2016-04-18

      Role     Kimberling Notation  
  1     External Center of Similitude of the Circumcircle of the Johnson Triangle and the Incircle     X(1479)   Center of the Outer Johnson-Yff Circle  
  2     External Center of Similitude of the Circumcircle of the Johnson Triangle and the Nine-Point Circle     X(3)   Circumcenter  
  3     External Center of Similitude of the Circumcircle of the Johnson Triangle and the Tangential Circle     X(3)   Circumcenter  
  4     External Center of Similitude of the Circumcircle of the Johnson Triangle and the Inner Johnson-Yff Circle     X(1)   Incenter  
  5     External Center of Similitude of the Circumcircle of the Johnson Triangle and the Outer Johnson-Yff Circle     X(3583)    
  6     External Center of Similitude of the Circumcircle of the Johnson Triangle and the Cosine Circle     X(3071)    
  7     External Center of Similitude of the Incircle of the Johnson Triangle and the Nine-Point Circle     X(119)    
  8     External Center of Similitude of the Incircle of the Johnson Triangle and the Spieker Circle     X(3)   Circumcenter  
  9     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Circumcircle     X(4)   Orthocenter  
  10     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Incircle     X(11)   Feuerbach Point  
  11     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Excentral Circle     X(1699)    
  12     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Antimedial Circle     X(2)   Centroid  
  13     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Tangential Circle     X(3)   Circumcenter  
  14     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Spieker Circle     X(1329)    
  15     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Brocard Circle     X(1349)    
  16     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Second Brocard Circle     X(2567)    
  17     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Orthocentroidal Circle     X(1347)    
  18     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Inner Johnson-Yff Circle     X(56)   External Center of Similitude of Circumcircle and Incircle  
  19     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Outer Johnson-Yff Circle     X(5592)    
  20     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Lemoine Circle     X(1677)    
  21     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Gallatly Circle     X(2010)    
  22     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Kenmotu Circle     X(3374)   Inner Regular Octagon Point  
  23     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Cosine Circle     X(486)   Inner Vecten Point  
  24     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Apollonius Circle     X(2051)    
  25     External Center of Similitude of the Antimedial Circle of the Johnson Triangle and the Incircle     X(999)    
  26     External Center of Similitude of the Antimedial Circle of the Johnson Triangle and the Nine-Point Circle     X(381)   Center of the Orthocentroidal Circle  
  27     External Center of Similitude of the Antimedial Circle of the Johnson Triangle and the Tangential Circle     X(2937)    
  28     External Center of Similitude of the Antimedial Circle of the Johnson Triangle and the Cosine Circle     X(3312)    
  29     External Center of Similitude of the Tangential Circle of the Johnson Triangle and the Circumcircle     X(4)   Orthocenter  
  30     External Center of Similitude of the Tangential Circle of the Johnson Triangle and the Nine-Point Circle     X(4)   Orthocenter  
  31     External Center of Similitude of the Spieker Circle of the Johnson Triangle and the Incircle     X(4)   Orthocenter  
  32     External Center of Similitude of the Spieker Circle of the Johnson Triangle and the Nine-Point Circle     X(7681)    
  33     External Center of Similitude of the Spieker Circle of the Johnson Triangle and the Inner Johnson-Yff Circle     X(4)   Orthocenter  
  34     External Center of Similitude of the Spieker Circle of the Johnson Triangle and the Outer Johnson-Yff Circle     X(4)   Orthocenter  
  35     External Center of Similitude of the Sine-Triple-Angle Circle of the Johnson Triangle and the Nine-Point Circle     X(6288)    
  36     External Center of Similitude of the Moses Circle of the Johnson Triangle and the Nine-Point Circle     X(114)   Complement of the X(98),Tarry Point  
  37     External Center of Similitude of the Moses Circle of the Johnson Triangle and the Antimedial Circle     X(1352)    
  38     External Center of Similitude of the Inner Johnson-Yff Circle of the Johnson Triangle and the Circumcircle     X(355)   Center of the Fuhrmann Circle  
  39     External Center of Similitude of the Inner Johnson-Yff Circle of the Johnson Triangle and the Spieker Circle     X(3)   Circumcenter  
  40     External Center of Similitude of the Outer Johnson-Yff Circle of the Johnson Triangle and the Spieker Circle     X(3)   Circumcenter  
  41     External Center of Similitude of the Cosine Circle of the Johnson Triangle and the Nine-Point Circle     X(6290)